bp: cleaning code

include/NeuralNetwork/Learning/BackPropagation.h

@@ -19,7 +19,9 @@ namespace Learning {
 			BackPropagation(const BackPropagation&)=delete;
 			BackPropagation& operator=(const NeuralNetwork::Learning::BackPropagation&) = delete;
 
-			inline virtual void setLearningCoefficient (const float& coefficient) { learningCoefficient=coefficient; }
+			void setLearningCoefficient (const float& coefficient) {
+				learningCoefficient=coefficient;
+			}
 
 			float getMomentumWeight() const {
 				return momentumWeight;